21121+4543 BU 160 AB (HD 202068)
21h 12m 06.93s +45° 42' 12.6" P.A. 155.00 sep 57.1 mag 8.88,10.73 Sp B8V dist. 340.14 pc (1109.54 l.y.)
| Coord 2000 |
21121+4543 |
|
Discov num |
BU 160 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 12 06.93 +45 42 12.6 |
|
| Date first |
1873 |
|
Date last |
2014 |
|
Obs |
17 |
|
| Pa first |
155 |
|
Pa last |
154.7 |
|
P.A. Now (θ) |
154.7° |
|
| Sep first |
60.0 |
|
Sep last |
57.084 |
|
Sep. Now (ρ) |
57.084" |
|
| Mag pri |
8.88 |
|
Mag sec |
10.73 |
|
delta mag (ΔM) |
1.85 |
|
Spectral class |
B8V (blue-white) |
|
| Pri motion ra |
+005 |
|
Sec motion ra |
-001 |
|
| Pri motion dec |
+000 |
|
Sec motion dec |
-003 |
|
| Notes |
N
(See Notes) |
|
rPM=1.342
This double is not physical.
21121+4543 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 202068 |
50561 |
21 12 07 +45 42 13 |
BU 160 AB |
2014 |
17 |
155 |
57.1 |
8.88 |
10.73 |
1.85 |
|
<=== |
| Show |
|
|
21 12 09 +45 41 21 |
BU 160 BC |
2015 |
18 |
115 |
6.4 |
11.40 |
11.60 |
0.20 |
|
|
| Show |
|
|
21 12 09 +45 41 21 |
ES 9005 BD |
2015 |
11 |
84 |
22.3 |
11.40 |
13.90 |
2.50 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 202068 |
|
Constellation |
Cygnus |
|
SAO |
50561 |
|
HIP |
104671 |
|
| Tycho2 |
3589-05067-1 |
|
Gaia DR2 |
2164014328604340736 |
|
HD |
202068 |
|
BD |
BD+45 3442 |
|
| Distance |
340.14 |
|
Distance ly |
1109.54 |
|
